From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423246AbcFMTIY (ORCPT ); Mon, 13 Jun 2016 15:08:24 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:43541 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753703AbcFMSh3 (ORCPT ); Mon, 13 Jun 2016 14:37:29 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Alex Deucher" Date: Mon, 13 Jun 2016 19:36:37 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 070/114] drm/radeon: make sure vertical front porch is at least 1 In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.36-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Alex Deucher commit 3104b8128d4d646a574ed9d5b17c7d10752cd70b upstream. hw doesn't like a 0 value. Signed-off-by: Alex Deucher [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings --- drivers/gpu/drm/radeon/atombios_encoders.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -332,6 +332,10 @@ static bool radeon_atom_mode_fixup(struc && (mode->crtc_vsync_start < (mode->crtc_vdisplay + 2))) adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + 2; + /* vertical FP must be at least 1 */ + if (mode->crtc_vsync_start == mode->crtc_vdisplay) + adjusted_mode->crtc_vsync_start++; + /* get the native mode for LVDS */ if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT)) radeon_panel_mode_fixup(encoder, adjusted_mode);